The Ultimate Flat Earth Experiment

The ultimate experiment to practically prove the shape of the Earth would be a fixed, permanent, tangible construction that demonstrates empirical truth in perpetuity — open for anyone to test and verify.
Professional structural engineer and outspoken globe skeptic Brian Mullin has conceptualized exactly such a structure through his Force the Line project. His design aims to create a measurable, observable system that could settle the debate once and for all by relying solely on physical engineering principles and verifiable data.